Teksheva, L M <br/><br/>
[Sanitary classification of publishing products].  [electronic resource] 

 -  Gigiena i sanitariia   
 - 47-50 p.  digital 
<br/><br/> Publication Type: Comparative Study; English Abstract; Journal Article 
<br/><br/><label>ISSN: </label>0016-9900 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Age Factors<br/>Asthenopia--prevention & control<br/>Books<br/>Child<br/>Child, Preschool<br/>Humans<br/>Middle Aged<br/>Newspapers as Topic--standards<br/>Periodicals as Topic--standards<br/>Publications--standards<br/>Reading<br/>Sanitation<br/>Textbooks as Topic--standards